2 days ago I've bought an HP Envy laptop, which comes with Windows 8 pre-installed.
Before that I were using Yumi USB flash drive with a dozen of boot options to set-up the computers (e.g. re-partition the disk, setting up and repairing dual-boot Linux+Win7, etc.).
However with HP Envy I didn't figure out, how to boot from Yumi USB flash drive. The main reason for this is probably that I've just met with UEFI and didn't figure out, how it works. Here is what I tried to boot from Yumi flash drive.

HP Envy boot options

With HP Envy I found, that if you press F11 on boot, you get a blue screen with
"Recovery. Your PC needs to be repaired. A required device isn't connected or can't be accessed. Error code: 0xc0000225" message and with 3 options below:

4 Answers
4

I've never used YUMI; however, based on skimming its main Web page, it looks like it sets up SYSLINUX to boot various image files from the USB flash drive. This type of configuration would have to be re-done using an EFI version of SYSLINUX or some other EFI boot loader (such as GRUB 2). You could experiment with this yourself, but I don't know of any tool that does this already or explicit instructions on how to do it. The closest I'm aware of is my Managing EFI Boot Loaders for Linux page, which describes EFI boot managers generally. You might be able to piece something together after reading that (and particularly the pages on SYSLINUX and/or GRUB 2) and studying the way YUMI sets things up. This will not be a point-and-click solution, though.